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Stock Based Compensation (Details 6) (USD $)
9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Options Outstanding and Exercisable 177,788  
Weighted Average Exercise Price $ 10.46 $ 10.20
Weighted Average Remaining Contractual Lives 2 years 3 months 18 days  
Range One
   
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Options Outstanding and Exercisable 136,063  
Weighted Average Exercise Price $ 8.60  
Weighted Average Remaining Contractual Lives 2 years 3 months 18 days  
Upper Range $ 8.60  
Range Two
   
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Options Outstanding and Exercisable 31,725  
Weighted Average Exercise Price $ 14.89  
Weighted Average Remaining Contractual Lives 1 year 10 months 24 days  
Lower Range $ 13.80  
Upper Range $ 15.20  
Range Three
   
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Options Outstanding and Exercisable 10,000  
Weighted Average Exercise Price $ 21.70  
Weighted Average Remaining Contractual Lives 4 years 2 months 12 days  
Lower Range $ 19.54  
Upper Range $ 23.85